Galileo (galileo.ai) (now Splunk Agent Observability)
https://www.splunk.com/en_us/about-splunk/acquisitions/galileo.html
Acquired by Cisco (announced 2026-04-09, closed by 2026-05); now Splunk Agent Observability. Treats memory as first-class in multi-agent tracing. Luna-2 SLMs (3B / 8B) scan every interaction for intent drift and belief drift; 20+ checks at sub-200ms latency. Catches when agent A's view of the world splits from teammate B's. OpenTelemetry-compatible.
Acquired · Verified 2026-10-28 · fresh as of 2026-10-28 · 46 cited facts, 2 with a third-party source · 3 recorded changes · Suggest a correction
At a glance
- Type
- Real-time intent / belief drift detection vendor fix
- Tier
- T1
- Created
- 2021 (founded 2021 by Atindriyo Sanyal Vikram Chatterji Yash Sheth; seed May 2022) third-party fix
- Latest release
- not applicable — not OSS fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Pricing
- Standalone pricing retired — galileo.ai/pricing now redirects to Splunk pricing; sold as Splunk Agent Observability vendor fix
- Funding
- Acquired by Cisco (announced 2026-04-09, completed by 2026-05-22; terms undisclosed); prior VC total $68M third-party fix
- Freshness
- 2026-10-28 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial vendor fix
- SDK languages
- python, rest, typescript vendor fix
- Protocols
- mcp-server, opentelemetry vendor fix
Memory taxonomy
- storage
- vector
- retrieval
- similarity
- persistence
- cross-session
- update
- append-only
- unit
- episode
- governance
- auditable
- conflict
- n/a
When to use
Optimised for: memory operation tracing + drift / poisoning detection
Anti-fit: not for use cases that don't run agent workloads in production
Pros & cons
Pros
First-mover in LLM observability; covers retrieval drift, hallucination, factuality alongside generic latency / cost — purpose-built for memory-driven agents.
Cons
Closed SaaS; pricing scales with traces; less open than Langfuse.
Claims & capabilities
Free 5k traces/month; Pro from $100; Enterprise custom. Doesn't scan stored memory files directly.
Technical surface
- API surface
- REST, SDK: Python
- Backend storage
- custom
- Deployment
- SaaS cloud; Enterprise: VPC or on-prem
- Embedding model
- locked
- Multi-tenancy
- hard-isolation
- MCP
- Yes — Galileo MCP Server documented; integrates with traces, prompts, datasets
- A2A
- Yes — A2A is listed under Integrations Overview (alongside CrewAI, Google ADK, LangChain, etc.)
- OpenTelemetry
- first-class — OTel-native ingestion
Compare Galileo (galileo.ai) (now Splunk Agent Observability) with…
Alternatives to Galileo (galileo.ai) (now Splunk Agent Observability) → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other memory observability & monitoring in the catalog, ranked by inbound references.
- Langfuse T1
Acquired by ClickHouse (2026-01-16); product and MIT-licensed repo continue under the Langfuse name. Memory module reads/writes captured as named spans. Trace Log View concatenates every agent step including memory ops. Agent Graphs (GA 2025) infer graph structure from observation nesting; session-level replay tracks how memory state evolves.
- LangSmith T1
Memory reads, vector DB retrievals, state changes are distinct span types in traces. RAG eval separates retrieval quality (context precision) from generation quality (faithfulness). Dataset versioning guards against eval drift.
- AgentOps T2
When Mem0 is connected, gains Memory Operation Timeline, Search Analytics, Memory Growth tracking, Error Tracking per memory call. Standalone, records context at each step but doesn't analyse memory quality.
- Ratine T2
Only tool found that scans the persistent memory layer on disk rather than runtime tracing. Detects injected instructions, obfuscated payloads (zero-width Unicode, base64, homoglyphs, hex), C2-pattern URLs, credential leakage. ratine diff compares snapshots for belief drift.
Sources (45 cited facts, 2 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Real-time intent / belief drift detection vendor
- What it does & what's distinct Acquired by Cisco (announced 2026-04-09, closed by 2026-05); now Splunk Agent Observabil… vendor
- Claims / benefits Free 5k traces/month; Pro from $100; Enterprise custom. Doesn't scan stored memory files… vendor
- Modalities text (LLM trace + agent step monitoring) vendor
- Created 2021 (founded 2021 by Atindriyo Sanyal Vikram Chatterji Yash Sheth; seed May 2022) third-party
- Funding Acquired by Cisco (announced 2026-04-09, completed by 2026-05-22; terms undisclosed); pr… third-party
- Pricing Standalone pricing retired — galileo.ai/pricing now redirects to Splunk pricing; sold as… vendor
- Compliance SOC 2 Type II (enterprise); no public HIPAA statement found vendor
- Data handling cloud-hosted (SaaS); Enterprise option: VPC or on-premises deployment vendor
- Deployment SaaS cloud; Enterprise: VPC or on-prem vendor
- HQ San Francisco CA vendor
- Founders / pedigree ex-Google AI founders; Vikram Chatterji (Carnegie Mellon; ex-Google AI PM 2018-2021) et … vendor
- Performance no public benchmark scores found — vendor does not publish quantitative perf metrics vendor
- API surface REST, SDK: Python vendor
- Backend storage custom vendor
- Multi-tenancy hard-isolation vendor
- Encryption at-rest + in-transit vendor
- SSO / RBAC SSO + RBAC vendor
- Embedding model locked vendor
- Consistency not specified — vendor docs do not address this dimension for memory vendor
- Versioning immutable append-log vendor
- Tombstoning append-only no delete vendor
- Schema evolution schema with migration vendor
- Namespace primitives per-tenant vendor
- Contradiction handling always append (no resolution) vendor
- Forgetting policy none (permanent) vendor
- MCP support Yes — Galileo MCP Server documented; integrates with traces, prompts, datasets vendor
- A2A support Yes — A2A is listed under Integrations Overview (alongside CrewAI, Google ADK, LangChain… vendor
- OTel first-class — OTel-native ingestion vendor
- Webhooks / events webhooks supported (alerts) vendor
- Import / export JSON via REST (JSON-over-REST; CSV/Parquet export for analytical use) vendor
- Validated verticals agent developers + AI platform teams (horizontal) vendor
- Time to running <10min (hosted SaaS) to <1hr (self-host) vendor
- Anti-fit not for use cases that don't run agent workloads in production vendor
- Optimised for memory operation tracing + drift / poisoning detection vendor
- Adjacent infrastructure BYO agent stack; this layer observes it vendor
- Pros First-mover in LLM observability; covers retrieval drift, hallucination, factuality alon… vendor
- Cons Closed SaaS; pricing scales with traces; less open than Langfuse. vendor
- Project & sources galileo.ai drift detection blog vendor
- architecture-deployment-locus cloud vendor
- licensing-bucket commercial vendor
- positioning-platform-vs-product platform vendor
- taxonomy-three-layer-rollup agent-infra repo
- sdk-languages python,rest,typescript vendor
- protocol-support mcp-server,opentelemetry vendor
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-28
- Funding / ownership “Acquired by Cisco (announced 2026-04-09, closed by 2026-05; terms undisclosed); prior VC total $68M” → “Acquired by Cisco (announced 2026-04-09, completed by 2026-05-22; terms undisclosed); prior VC total $68M” source
- 2026-10-23
- Name “Galileo (galileo.ai)” → “Galileo (galileo.ai) (now Splunk Agent Observability)”
- Homepage “https://galileo.ai/” → “https://www.splunk.com/en_us/about-splunk/acquisitions/galileo.html”
- 2026-10-22
- Pricing “free: 5K traces/mo; Pro: $100+/mo (50K traces); Enterprise: custom (VPC on-prem); runtime guardrails on Enterprise only” → “Standalone pricing retired — galileo.ai/pricing now redirects to Splunk pricing; sold as Splunk Agent Observability” source
- Funding / ownership “$68M total ($10M seed + $13M Series A + $45M Series B Oct 2024); Scale Venture Partners + Premji Invest led Series B” → “Acquired by Cisco (announced 2026-04-09, closed by 2026-05; terms undisclosed); prior VC total $68M” source